Conjugated polymer based on thiophene [3, 4-c] pyrrole-4, 6-diketone structure and preparation method and application thereof
A conjugated polymer, 4-c technology, applied in chemical instruments and methods, organic compounds/hydrides/coordination complex catalysts, chemical/physical processes, etc., can solve problems such as patent publications that have not been found, and achieve Low production cost, easy access to raw materials, and simple post-processing effects
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[0052] The above-mentioned preparation method of conjugated polymer based on thiophene[3,4-c]pyrrole-4,6-dione structure comprises the following steps:
[0053] ① Dissolve monomer A, monomer B, oxidant, alkali, palladium catalyst and additives in a solvent, under nitrogen protection, heat the reaction, keep the reaction system at 60-150 ℃, stir, and react for 12-72 hours.
[0054] ② After cooling the reaction solution obtained in step 1 to room temperature, add dropwise to methanol for sedimentation, suction filtration to obtain a crude product, which is successively extracted with methanol and n-hexane Soxhlet, and then extracted with chloroform Soxhlet extract, collect the chloroform extract, add methanol for sedimentation after concentration, suction filter to obtain a filter cake, and vacuum dry to obtain a polymer based on thiophene[3,4-c]pyrrole-4,6-dione structure.
[0055] Preferably, the solvent is one of toluene, xylene, 1,4-dioxane, o-xylene, tetrahydrofuran, N,N-di...
Embodiment 1
[0074] Example 1: When X=O, R 2 =R 3 = H
[0075] Monomer A (1eq), Monomer B (1eq), Silver Carbonate (8eq), Potassium Acetate (8eq), Herrmann'scatalyst (0.01eq) and Di(tert-butyl)phosphinomethyl tetrafluoroborate (0.04 eq) was dissolved in 4 mL of N,N-dimethylacetamide, stirred at 60°C, and reacted for 72 hours. After cooling, the reaction solution was poured into methanol and filtered with suction to obtain a crude product. The crude product was subjected to Soxhlet extraction with methanol and n-hexane in turn for 24 hours, and finally Soxhlet extraction was carried out with chloroform, until the extract in the Soxhlet extraction tube was colorless, the extraction was stopped, the chloroform extract was collected, and concentrated to 2mL, Drop into 60mL methanol for sedimentation, sedimentation for 24h, suction filtration, and the filter cake is dried in a vacuum drying oven at 60°C for 12h to obtain polymer P1 (yield: 56.4%, M n =2.00KDa, PDI=1.30).
Embodiment 2
[0076] Example 2: When X=S, R 2 =R 3 = H
[0077] Monomer A (1eq), Monomer B (1eq), Silver Carbonate (4eq), Potassium Acetate (4eq), Tetrakis(triphenylphosphine)palladium (0.01eq) and Di(tert-butyl)phosphinomethyltetrafluoro The borate (0.02eq) was dissolved in 1mL of N,N-dimethylacetamide solvent, stirred at 120°C, and reacted for 48 hours. The post-treatment was the same as in Example 1 to obtain polymer P2 (yield: 88.4%, M n =27.00KDa, PDI=1.80).
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